Operation Instruction VARIODYN
®
D1 Comprio
14 FB 798666.HO.GB0 / 07.13
LED indicator for the DAL BUS
Digital call stations (DCS) or Universal Interface Modules (UIM) can be connected to the three digital audio links
(DAL). The 4th DAL is used for internal connections. The modules are controlled via the DAL BUS and are
supplied with 24 V operating voltage.
1
234
DAL
Fig. 7: LED of the DAL BUS
DAL Bus
OFF No device configured
ON, green Device connected and ready for operation
ON, yellow
Device not connected, faulty or microphone defective. If a UIM is present or the
connection of the monitored inputs is faulty.
Flashing green Device being prelistened
LED indicators of the DAL channel
The LEDs indicate which channel of the DAL Bus is being listened to over the integrated loudspeaker of the
control module (see >Monitor< button).
12
IN
OUT
DAL
Fig. 8: LED of the DAL channel
DAL channel
OFF Prelistening not activated
Flashing green Prelistening activated